Many say the relationship with junk food is totally controlling their lives and that they feel disempowered and unable to break free. Buying it is a compulsion, even though they know that it will lead to an inevitable gorging, followed by self-loathing and despair. This sounds remarkably like an addiction to me.
While at work last week I was chatting about food - always on the agenda - and he was describing how ill and bloated he feels after eating pasta. He went on to say that even though he feels sick every single time, he still eats it regularly because "It's a treat". It literally takes days for his body to recover.
As a personal trainer, when I'm writing nutrition and training programmes for my clients, their personality is a key consideration. Even a diet plan perfectly tailored to your physical requirements and daily schedule is going to fall flat if it's not structured in a way that motivates you to stick to it.